CN111976325A

CN111976325A - Traceable printing method and traceable printing system

Info

Publication number: CN111976325A
Application number: CN202010828912.3A
Authority: CN
Inventors: 胡建华
Original assignee: Hangzhou Shilei Technology Development Co ltd
Current assignee: Hangzhou Shilei Technology Development Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-24
Anticipated expiration: 2040-08-18
Also published as: CN111976325B; WO2022037023A1

Abstract

The invention discloses a traceable printing method and a traceable printing system. The traceable printing method obtains the color separation model of the original manuscript of the printed matter in a wider color gamut by a specific RGB color separation mode, overcomes the technical defect that the color gamut of 4-color printing in the prior art is small, and particularly embeds traceable information of the whole industry chain by a hidden plate making mode, so that the obtained printed matter has the high-fidelity printing characteristic of a 'faithful original manuscript' and also has the functions of copy prevention and scanning prevention and traceable 'superior to the original manuscript' of the whole industry chain. Moreover, the invention also realizes the simulation substitution of more than 85 percent of traditional pantone special color ink matching, reduces the special color use in printing originals, reduces the cost and labor hour efficiency loss caused by the ink changing of a special color washing machine and reduces the printing and copying cost through the selection of the base color ink and the optimization of a color separation model while realizing accurate and rapid printing and traceability of the whole industrial chain. The invention is not only suitable for offset printing, but also suitable for flexo printing, gravure printing and other graphic printing and copying.

Description

Traceable printing method and traceable printing system

Technical Field

The invention relates to the technical field of anti-counterfeiting printing, in particular to a traceable printing method and a traceable printing system.

Background

The prior printing, copying and packaging printing industry has the limitation and outstanding problems:

one is the use of a 4 Color (CMYK) printing mode, small color gamut, and gray-dark image; in addition, the printing of 175 lines and amplitude-modulated dots has visual rose spots, low precision and poor and exquisite visual perception. In the graphic design software PS, RGB wide color gamut graphics with color gamut warning are often limited by the 4-color printing color gamut, and it is difficult to express beautiful colors (colors in RGB wide color gamut space are difficult to express). Therefore, the packaging printing mostly adopts spot colors, and the result of using a large amount of spot colors is high in cost, the waste of color matching ink is large (the spot color ink is 2-4 times of the price of 4-color base color ink), the ink is changed by washing machines, the efficiency of production orders is low, and especially in the traditional metal printing industry, due to the limitation of white degree of the bottom, the color gamut of the 4-color printing of the image is smaller (only about 50 percent of the Pantong color gamut), and the using amount of the spot colors is more than 60 percent.

And secondly, the universal printing mode of '4 colors CMYK + spot color', which is uniform, easy to copy and not anti-counterfeiting. Any enterprise or person can obtain the printed matter with the same visual effect only by scanning and copying the printed matter, and the reality is hard to distinguish.

Thirdly, the printing is traced back difficultly, especially when food safety, the quick response of needs, accurate management and control, in time put on the shelf problem product, is difficult to satisfy quick, in time, accurate tracing back requirement. Even with anti-counterfeit printing, generally limited to brand identification, rapid supply chain tracing is more difficult to develop if the brand has multiple suppliers, particularly large groups, large brands, often sold nationwide, supply chains involving multiple and intricately staggered suppliers, such as: the metal package products such as infant milk powder, red cow beverage and the like not only comprise filling enterprises of brand merchants, but also relate to can making container enterprises, printing enterprises and stock material enterprises, and each enterprise has a production batch number, date and the like. There is also a possibility that accidents may be caused by problems in the manufacturing of the respective food-contact materials, the processing of the packaging containers, and the filling processes. Once the end market finds a problem requiring reverse vendor traceability, determining lot number, range, quantity, etc., time, market traceability validation time is too long. In addition, sometimes, the goods are placed and recalled all over the country due to the problem of the supplier in only one local area, and the loss of the brand supplier and the supplier is huge.

How to overcome the limitation of the existing printing method, the method provides the printing which has the effects of high definition and wide color gamut, has the anti-counterfeiting performance of copy prevention and scanning prevention, can realize the rapid, accurate and traceable printing of the whole industrial chain, and becomes a technical problem to be solved urgently.

Disclosure of Invention

The invention aims to provide a traceable printing method and a traceable printing system, which are used for overcoming the limitation of the existing printing method, and provide the traceable printing with high-definition wide color gamut effect, anti-counterfeiting performance of copy and scanning prevention and realization of the traceable printing of the whole industrial chain.

In order to achieve the purpose, the invention provides the following scheme:

a traceable printing method of a printed product, comprising the steps of:

acquiring whole industry chain tracing information of enterprise information related to a whole industry chain of commodity manufacturing;

determining an addressing mode of the whole industry chain tracing information; the addressing mode is as follows: or addressing by color, or addressing by zone bit, or addressing by combination of color and zone bit;

establishing a color separation model according to the original color gamut of a printed matter and the color requirement for printing matching;

embedding the whole industry chain tracing information into an electronic image-text printing plate of the printed manuscript in different invisible submerging modes by adopting a circular proofing verification mode according to the characteristics of the manuscript of the printed manuscript, the addressing mode and the color separation model to obtain a traceable printed matter composite printing plate file;

and based on an anti-counterfeiting printing technology, outputting and printing the traceable printed matter printing plate file and the standard compliant printing plate to obtain the traceable printed matter of the whole industrial chain.

Optionally, the obtaining industry-wide chain tracing information of enterprise information related to industry-wide chain of commodity manufacturing further includes:

and assigning codes to the whole industry chain tracing information to obtain the whole industry chain tracing information represented by the secret codes.

Optionally, the invisible embedding mode includes one or more combinations of latent image embedding, micro code character screening embedding, local screening embedding, micro code character embedding, vector embossment character embedding and special effect invisible ink printing plate making embedding.

Optionally, the establishing of the color separation model according to the original color gamut of the printed matter and the color requirement for print matching specifically includes:

measuring the color gamut of the RGB manuscript of the printed product in a PS software environment, and judging whether all colors in the manuscript of the printed product are in the color gamut space of CKYK;

if the judgment result shows that the printing product is the CMYK4 color separation printing plate, converting the original of the printing product into a PDF standard format in a PS software environment or an AI graphic design making and editing software environment, and then directly separating the colors of the original of the printing product by using a 4-color separation model built in a CTP publishing process to obtain the CMYK4 color separation printing plate of the original of the printing product; or performing color separation based on RGB primary color ink on the original manuscript of the printed matter by using third-party color separation software to obtain an RGB three-primary color ink color separation model of the original manuscript of the printed matter; the third party color separation software is ICISS color separation software or one of GMG color separation software, CGS color separation software and PACKZ + ALwan special multi-color separation color management software;

if the judgment result shows that the original color gamut exceeds the CMYK4 color gamut, measuring data or color samples of colors exceeding the CKYK color gamut space as basic colors needing to be expanded outside the CMYK ink color gamut corresponding to the original, determining the color density or Lab and Lch values of each expanded basic color, supplementing the ink color gamut space of the CKYK by using the expanded basic colors, drawing an ink color gamut space diagram which is based on the CMYK + expanded basic colors of the Lab or Lch color space and contains primary colors and secondary colors, and judging whether the original color gamut of the printed product is contained in the expanded ink color gamut space;

if the drawn expanded ink space colors are all larger than or equal to the original color gamut space, determining that the matching of the ink primary colors is feasible, and laying feasible conditions for the matching of the ink color gamut in the early stage for the subsequent construction of color separation models;

if the expanded ink color gamut space is still insufficient to make up the original color gamut space, the insufficient part needs to be expanded, adjusted and added with new primary color ink, or the color density of the basic color needs to be enhanced by the insufficient part of the ink color gamut space, so as to make up the insufficient ink space;

circularly drawing ' CMYK + extended basic color ' ink color gamut spaces containing primary and secondary colors based on Lab or Lch color spaces ' respectively and comparing the ink color gamut spaces with the original color gamut; if the ink color gamut is larger than or equal to the original color gamut or within the tolerance range accepted by the client, determining the ink color gamut matching of the XMYK + expanded basic color; the spectrum of all the to-be-used base color inks can be measured, a color separation model based on the color gamut of the inks is constructed by adopting third-party multi-color separation software, the color separation of the original manuscript of the printed matter is completed, and the wide-color-gamut printing color separation model of the original manuscript of the printed matter is obtained.

Optionally, the creating a color separation model according to the original color gamut of the printed matter and the color requirement for print matching further includes:

identifying and verifying the construction correctness of the color separation model, adopting a full-color domain standard map and a neutral gray map in an RGB format, carrying out color separation by using the color separation model to be detected, obtaining a color separation model verification result through screen sample making, paper sample making or object sample making under the support of GMG and CGS color management software, measuring by using an Aizili instrument, and observing in a visual standard manner in combination with a standard light source environment, wherein the color separation model can be regarded as being correct and capable of passing construction when the color separation model is combined with chromatic aberration within an allowable range;

and when the color separation model verification result shows that the color separation model does not pass, the color separation model needs to be modified and optimized again until the color separation of the standard color test original atlas and the neutral gray atlas is carried out, and then the actual screen sample making, the paper sample making, or the actual sample making chromatic aberration Lab and Lch are in an allowable range.

Optionally, the method of cyclic proofing verification is adopted, and the traceability information of the whole industry chain is embedded into the electronic image-text printing plate of the printed manuscript in different invisible submerging modes to obtain a composite printing plate of the traceable printed manuscript, and the method specifically includes the following steps:

judging whether image dots exist in the original of the printed matter according to the characteristics of the original of the printed matter to obtain a first judgment result;

if the first judgment result is yes, invisible embedding of the whole industry chain tracing information is carried out on the image dots of the manuscript of the printed matter in a color separation screen hanging mode, a local screen hanging mode, a dot editing mode or a micro code character screen hanging mode, and identification and verification are carried out on the embedded information in an identification and verification mode;

judging whether the original of the printed matter has a vector pattern or not by judging the characteristics of the original of the printed matter to obtain a second judgment result;

if the second judgment result shows that the first judgment result is positive, performing multi-color separation mesh overprinting color visual simulation on the vector pattern of the original of the printed matter, and making an information latent image on the mesh tone; or directly embedding the micro code character into the solid color of the vector pattern area, and identifying and verifying the embedded information by adopting an identification and verification mode;

judging whether lines exist in the original manuscript of the printed matter according to the characteristics of the original manuscript of the printed matter to obtain a third judgment result;

if the third judgment result shows that the width of the lines is within the width threshold range, selecting lines in the original manuscript of the printed matter, embedding local or whole line micro code character information, and identifying and verifying the embedded information by adopting an identification and verification mode;

judging whether characters exist in the original manuscript of the printed matter according to the characteristics of the original manuscript of the printed matter to obtain a fourth judgment result;

and if the fourth judgment result shows that the font with the font size within the preset range of the font size is selected from the lines of the original of the printed matter, local or whole character embedding is carried out, and the embedded information is identified and verified in an identification and verification mode.

And finally, according to the characteristics of the printed matter manuscript, particularly when the pattern layer of the printing plate is less than 3 colors, the pattern and characters are simple, and more information is not convenient to plate according to a conventional method, introducing fluorescent invisible ink, or temperature change protection ink, or electromagnetic induction information special effect invisible ink to obtain the invisible effect of embedded information, and identifying by using a corresponding tool.

Optionally, the identification verification mode is to embed the information and print the invisible information and not display, and the printed sample sheet is convenient and reliable to read and easy to realize conventional printing, and specifically is that:

information embedding invisibility inspection: outputting a platemaking original of the embedded information according to a preset design requirement through a hanging net, and judging whether the embedded information is displayed after being printed after a real object is sampled, wherein the displaying comprises the steps of photographing and displaying after a printed sample is scanned; if the instrument measures the appearance measurement chromatic aberration delta E in the embedded information area₀₀If Lab exceeds the allowable range, readjusting the position or mode of invisible embedding of the optimization information; and sequentially and repeatedly optimizing until the invisible embedding passes the acceptance check until the invisible embedding is not formed or the color tolerance of the visible embedding is within the visual tolerance range under the environment of instrument data measurement and standard light sources.

Information embedding readability verification: after the information-embedded original manuscript is normally screened and output according to the design requirement and is printed with a sample sheet, checking and accepting the original manuscript on a preset position of the sample sheet, and correspondingly judging whether a reading tool can conveniently, quickly and reliably read by means of an invisible embedding method; if the reading is inconvenient, or not reliable enough, and cannot be safely and quickly ensured to read by 100 percent, the diving position and the mode need to be optimized and adjusted again; optimizing and verifying in a circulating mode in sequence until all embedded information meets printing invisibility, and realizing convenient, accurate and reliable 100% quick reading by means of a tool;

in addition, for the information hiding and reading realized by adopting special electromagnetic information ink, fluorescent invisible ink, temperature change protection ink and special spectrum 'color fingerprint' printing and other special effect prepress information invisible plate making, special reading tools corresponding to the embedding modes are prepared in advance, such as: the electromagnetic induction information recognizer, the spectrum recognizer or the magnifier, the lock opening plate and the fluorescent lamp are used for recognizing and reading to obtain the verification of the effectiveness of the invisible information recognition and reading

A traceable printing system of a print, the traceable printing system comprising:

the whole industry chain tracing information acquisition module is used for acquiring whole industry chain tracing information of enterprise information related to a whole industry chain of commodity manufacturing;

the addressing mode determining module is used for determining the addressing mode of the whole industry chain tracing information; the addressing mode is as follows: or addressing by color, or addressing by zone bit, or addressing by combination of color and zone bit;

the color separation model establishing module is used for establishing a color separation model according to the original color gamut of the printed matter and the color requirement for printing matching;

the invisible embedding module is used for embedding the traceability information of the whole industry chain into an electronic image-text printing plate of the original manuscript of the printed matter in different invisible sneaking modes by adopting a circular proofing verification mode according to the characteristics of the original manuscript of the printed matter, the addressing mode and the color separation model so as to obtain a traceable printed matter composite printing plate file;

and the printing module is used for outputting and printing the traceable printed matter printing plate file and the standard compliance printing plate based on the anti-counterfeiting printing technology, so that the traceable printed matter of the whole industrial chain can be obtained.

Optionally, the traceable printing system further includes:

and the code assigning module is used for assigning codes to the whole industry chain tracing information to obtain the whole industry chain tracing information represented by the secret codes.

Optionally, the color separation model establishing module specifically includes:

the color gamut space judgment submodule is used for measuring the color gamut of the RGB manuscript of the printed product in a PS software environment and judging whether all colors in the manuscript of the printed product are in the color gamut space of CKYK;

the first color separation submodule is used for converting the original manuscript of the printed matter into a PDF standard format under a PS software environment or an AI graphic design making and editing software environment and then directly separating colors of the original manuscript of the printed matter by using a 4-color separation model built in a CTP publishing process to obtain a CMYK4 color separation printing plate of the original manuscript of the printed matter if the judgment result shows that the original manuscript of the printed matter is in the PS software environment or the AI graphic design making and editing software environment; or performing color separation based on RGB base color ink on the original manuscript of the printed matter by using third-party color separation software to obtain an RGB base color ink color separation model of the original manuscript of the printed matter; the third party color separation software is one of ICISS color separation software, GMG color separation software, CGS color separation software or Escico multi-color separation color management software;

the second color separation submodule is used for measuring data or color samples of colors exceeding the color gamut space of CKYK as basic colors needing to be expanded outside a CMYK ink color gamut corresponding to the original if the judgment result shows that the original color gamut exceeds the CMYK4 color gamut, determining the color density or Lab and Lch values of each expanded basic color, supplementing the ink color gamut space of CKYK by using the expanded basic colors, drawing an ink color gamut space diagram which is based on the CMYK + expanded basic colors of the Lab or Lch color space and contains primary colors and secondary colors, and judging whether the original color gamut of the printed product is contained in the expanded ink color gamut space; if the drawn expanded ink space colors are all larger than or equal to the original color gamut space, determining that the matching of the ink primary colors is feasible, and laying feasible conditions of the ink color gamut matching in the early stage for the subsequent construction of color separation models; if the expanded ink color gamut space is still insufficient to make up the original color gamut space, the insufficient part needs to be expanded, adjusted and added with new primary color ink, or the color density of the basic color needs to be enhanced by the insufficient part of the ink color gamut space, so as to make up the insufficient ink space; circularly drawing an ink color gamut space containing primary colors and secondary colors based on 'CMYK + extended primary colors' of Lab or Lch color spaces respectively and comparing the ink color gamut space with an original color gamut; if the ink color gamut is larger than or equal to the original color gamut or within the tolerance range accepted by the client, determining the ink color gamut matching of the XMYK + expanded basic color; the spectrum of all the primary color inks to be used can be measured, a color separation model based on the color gamut of the inks is constructed by adopting third-party multi-color separation software, the color separation of the original manuscript of the printed matter is completed, and the wide-color-gamut printing color separation model of the original manuscript of the printed matter is obtained.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a traceable printing method and a traceable printing system, wherein the traceable printing method comprises the following steps: acquiring whole industry chain tracing information of enterprise information related to a whole industry chain of commodity manufacturing; determining an addressing mode of the whole industry chain tracing information; establishing a color separation model according to the original color gamut of a printed matter and the color requirement for printing matching; embedding the whole industry chain tracing information into an electronic image-text printing plate of the printed manuscript in different invisible submerging modes by adopting a circular proofing verification mode according to the characteristics of the manuscript of the printed manuscript, the addressing mode and the color separation model to obtain a traceable printed matter composite printing plate file; based on the anti-counterfeiting printing technology, the traceable printed matter printing plate file is output and printed by the standard compliance printing plate, and the traceable printed matter of the whole industrial chain can be obtained. According to the traceable printing method, the color separation model of the printed manuscript is obtained in a wider color gamut in a color separation mode, the technical defect that the color gamut of 4-color printing in the prior art is small is overcome, and the traceable information of the whole industry chain is embedded in a hidden embedding mode, so that the obtained printed manuscript has the anti-counterfeiting performance of copy prevention and scanning prevention and can be traced back by the whole industry chain. In addition, the invention reduces the number of spot colors in the original manuscript of the printed matter in a color separation mode and reduces the printing cost.

The invention discloses a traceable printing method and a traceable printing system. The traceable printing method obtains the color separation model of the original manuscript of the printed matter in a wider color gamut by a special RGB color separation mode, overcomes the technical defect that the color gamut of 4-color printing in the prior art is small, and particularly embeds traceable information of the whole industry chain by a hidden plate making mode, so that the obtained printed matter has the high-fidelity printing characteristic of a 'faithful original manuscript' and also has the functions of copy prevention and scanning prevention and traceable 'superior to the original manuscript' of the whole industry chain. Moreover, the invention also selects the base color ink and optimizes the color separation model, such as: RGB tricolor separation or limited and multi-primary color ink separation realizes the simulation replacement of more than 85 percent of traditional pantone special color ink matching, reduces the special color use in a printing original document, reduces the cost and working hour efficiency loss caused by the ink changing of a special color washing machine, and obtains an efficiency way of reducing the printing and copying cost while the printing is accurate, rapid and traceable in the whole industry chain. The invention is not only suitable for offset printing, but also suitable for graphic printing and copying such as flexography, gravure and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a flowchart of a method for traceable printing of a printed product according to the present invention;

fig. 2 is a schematic diagram of a traceable printing method of a printed product provided by the invention;

FIG. 3 is a diagram of a printed document according to one embodiment of the present invention;

fig. 4 is a color gamut plan view provided by the first embodiment of the invention;

fig. 5 is a reading effect diagram of a 02-series original after information is embedded according to a first embodiment of the present invention;

FIG. 6 is a graph of tone curves provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic diagram of a net according to a first embodiment of the present invention;

fig. 8 is a reading effect diagram of a 02-series original after information is embedded according to the first embodiment of the present invention;

FIG. 9 is a diagram of a printed document according to a second embodiment of the present invention;

FIG. 10 is a comparison chart of color conversion provided by the second embodiment of the present invention;

fig. 11 is a schematic diagram illustrating an information embedding manner distribution according to a second embodiment of the present invention;

fig. 12 is a traceable information recording diagram according to a second embodiment of the present invention;

fig. 13 is a diagram of the reading effect of the embedded information according to the second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a traceable printing method and a traceable printing system, which are used for overcoming the limitation of the conventional printing method and providing a printing mode which not only has a high-definition wide color gamut effect, but also has anti-counterfeiting performance of copy prevention and scanning prevention and can realize traceable of the whole industrial chain.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Traditional printing and copying is to make different printing designs into standardized products; the aim of the invention is to produce non-standard personalized, hidden information, recognizable and traceable printing from standard printing. The case by case, batch by case, the case is different, the forward direction is guaranteed, and the reverse tracing is carried out. Particularly, the invention aims to overcome the defects of the traditional printing, provides a printing ink which not only has high-definition wide color gamut effect, but also can prevent copying and scanning personalized anti-counterfeiting, particularly can be systematized, fast and accurate, can be traced back by a whole industrial chain, effectively solves the process and product limitations of industrial printing, and provides a new solution for the high-quality transformation development of the printing and copying industry.

The technical terms designed by the technical scheme of the invention are explained as follows:

high fidelity printing or multi-color separation printing or wide color gamut printing: and the printing with the characteristics of high definition (such as 200 lines) and wide color gamut (super 4 color gamut, such as CMYK + OBV7 colors) and the like. There are two modes of practical use: an interactive high-fidelity halftone image multi-color separation software represented by ICISS can be set according to ink hue (spectrum data), overprint, gray balance, maximum overprint quantity and the like, and color separation before printing is accurately matched and developed. The wide-color-gamut multi-color separation method is represented by PACKZ + ALwan, GMG and CGS, and comprises the steps of inputting determined printing fixed base color ink spectrum data and overprinting data respectively, printing by a multi-color separation characteristic target ICC file, obtaining ICC characteristic data printed based on the multi-color separation ink characteristic, calling ICC printed by fixed multi-color separation ink, and performing wide-color-gamut multi-color separation through software automatic matching calculation. The number of orange supporting channels is different at most in different software, the ICISS supports 16 color separation channels at most, the GMG, the CGS and the PACKZ + ALwan support 7 color separation channels at most at present, and the esmological color separation energy supports 12 color separation channels at most. In addition, in a simpler mode, pantone 7-color card ink is fixed as a fixed color group, and a pantone 7-color lookup table is used, so that the problem of accurately replacing special color ink matching in a special color printing mode is specially solved.

Latent image and unlocking: belongs to a method for printing plate making anti-counterfeiting. The method mainly utilizes the reticulate pattern interference principle to carry out certain displacement (for example, the reticulate pattern or the line is displaced according to the shape of a pattern character) on the reticulate pattern or the line on the shading (the reticulate pattern or the line) which is fixedly ordered, and then when the reticulate pattern with corresponding frequency is close to the shading, a phenomenon of texture interference can occur.

And (3) carrying out combined anti-counterfeiting of the mesh point and the precision: also belongs to a printing plate-making anti-counterfeiting method. The personalized, differentiated and recognizable anti-counterfeiting printing is realized by printing with different printing accuracies (such as 150 lines, 200 lines, 250 lines and 350 lines), different printing dot patterns, personalized character dots, pattern dots, local hanging nets and the like, or by combining the two.

Traceability information character and content system of the whole industry chain: the system comprises industrial chain enterprises and traceable information of the enterprises corresponding to the information of original places, production batch numbers, dates and the like. The general design comprises two latitudes, namely a longitudinal latitude and a transverse latitude, wherein the transverse latitude takes an enterprise as an object, such as: brand trade codes, can-making packaging container trade codes, printing trade codes and main material trade codes, wherein the brand trade codes comprise: sensitive suppliers such as tinplate, coated iron, printing stock, ink, coating and glue can be assigned with codes; and the information corresponding to enterprises, including production time, batch number, origin and the like, is used as the traceback content in the longitudinal direction. The vertical and horizontal combination constructs a systematic traceable information content system.

Traceability: identification of identity (location capability), or tracking and path-tracing capabilities are obtained on the package by specially printed assignments (traceable information character encoding).

Extracting and identifying hidden information: extraction and identification is typically done by tools and means such as: the magnifying glass, the grating sheet, the ultraviolet lamp, the electromagnetic induction reader, the mobile phone scanning code and the like enable the originally hidden information of the character supplier, the production batch number, the time and the original place of production to be identified and effectively extracted, and the hidden information is displayed.

Traceable enterprise information (data chain coding) model: the whole industrial chain data chain traceability system (containing cipher codes) integrated vertically and horizontally is constructed by taking industrial chain enterprises as objects (commonly known as horizontal direction) and taking information such as specific origin, production date, batch number and the like of production enterprises as contents (vertical direction).

Addressing channels and rules: because finger packaging patterns are large in area, multiple in color and multiple in information embedding content, if a plurality of complex supply chains are clustered and supplied in a crossed manner, rapid and accurate targeted identification is difficult; to this end, traceable addressing channel rules are set: the information is embedded according to the position, the graph, the color or the combined design according to the specification, the record is reserved, and the quick and accurate traceability after the fact is convenient.

Code width direction: the whole industry chain and the horizontal range of the assigned code are provided by the terminal supplier and are uniformly brought in after the qualification certification of the supply chain. Such as: primary, secondary, tertiary suppliers, etc.; businesses may also be coded (e.g., Qi).

Coding depth direction: the coding information and related content are designed, and the traceability is ensured according to model traceability requirements, unified standard content and format. Such as: brand merchant identity, sales channel, origin, production lot number, time, etc.; the longitudinal information can also be marked by a code (such as Zi) to increase or decrease the information capacity according to the actual situation when necessary.

Printing and embedding: the traceable information characters are embedded into each color separation printing plate to be printed through prepress plate making, and the embedded information can be effectively hidden after printing, and the process of reading is convenient (image dot embedding, vector pattern embedding, character line embedding, special effect information ink plate making embedding and the like). There are also: embedding wide color gamut and multi-color separation embedded information; embedding information of different net points under the condition of local net hanging; embedding embedded information with different precisions; embedding latent image and unlocking information or embedding other special effect ink and other hidden information; special attention is paid to different equipment conditions (offset printing, gravure printing and flexo printing), and process parameters need to be adjusted; the invisible printing with different precisions and different screen points and the same version can ensure the effective invisible embedding of information and achieve the visual effect of faithful original and superior to the original by applying the contrast screen point compensation technology and the neutral gray control technology.

Traceable addressing flag setting:

1) the method has the advantages of accurate and unique coding content combing and orderly and clear coding expression principle (according to the width, depth, orderly expression, standard specification of expression rules, one scheme for one client, whole-course recording and convenient tracing).

2) The printing process design gives consideration to the conditions of the existing equipment and materials, wide application and the printing stability principle (meeting the printing process requirement);

3) complicated traceable and information coding, traceable identification addressing design and recording for subsequent inspection are required.

4) Convenient recording and inquiring, and simple and efficient principle.

The invention aims to overcome the defects of the traditional printing, in particular to the limitations of the prior printing process technology and products, and provides the following steps: the method is characterized in that printing (particularly package printing, including offset printing, gravure printing and flexography) is taken as a platform, prepress plate making design of invisible embedding of printing electronic manuscript layout information is taken as a core, longitudinal and transverse whole industry chain traceable information (an enterprise with a width range including the whole industry chain is constructed by taking a terminal brand as a leading head, and a longitudinal and transverse traceable information system at least containing enterprise origin information and batch number date information is deeply involved), multi-dimensional (printing macro dimension, micro dimension and special effect material dimension), multi-layer (the whole industry chain spans multiple supply chain levels, such as a first-level, a second-level, a third-level and a … … M-level), and additionally clustered complex supply chain traceable addressing rules (traceable addressing according to a pattern position or a color or a position and color combination) are carried out, so that 'faithful to the manuscript is better than the manuscript' is realized, prepress embedding of the longitudinal and transverse traceable information of the industry chain is, Or special effect printing, so that common printing (CMYK + special color) manuscripts are converted into personalized or wide color gamut (CMYK + OGV + … Ni), anti-counterfeiting presswork containing traceable information of enterprises in the whole industry chain, and accurate and traceable presswork of which the faithful manuscripts are superior to the manuscripts.

Wherein, the multi-dimensional: including printing macroscopic dimensions, printing microscopic dimensions, special effect material dimensions.

Printing macroscopic dimension:

in the printing macro dimension, the printing macro color separation color plate mainly refers to the number and color gamut characteristics (color gamut anti-counterfeiting) of a printed macro color separation color plate, such as printing by using a 4-color standard universal color gamut or printing by using a wide color gamut; or printing with different color separation quantity and personalized ink color. For example, CMYK (standard gamut) + OGB extended gamut + W1 (special effect invisible ink color) + Nn (other extended colors, n being the number of 1, 2, … other colors). The color separation design is different from the standard color gamut characteristics of conventional 4-color CMYK, and is used for specially designing and expanding the easily-recognized hypercolor gamut, so that more spaces for making invisible information are created while the high-fidelity printing effect is obtained. The invention expands the screen tone image or vector pattern printing from the limitation and 4-color embedding to (CMYK + Nn, n is 1-12) in the printing macro dimension, the 4-12 colors are freely embedded according to the requirement, and the embeddable information capacity is greatly enhanced.

Printing microscopic dimension: mainly refers to the microcosmic arrangement of printing precision, net hanging angle and net shape of net points.

High-definition printing and dot shape coding (dot and precision combined anti-counterfeiting): printing with different precisions is selected by selecting 150-400 lines, and the copying precision can be obviously identified by virtue of a magnifying lens. Adopting different printing precision and printing network points, or introducing anti-counterfeiting and personalized information code-assigning network points and code-assigning characters also can enhance the identification capability and increase the invisible printing assignment space and latitude.

Latent image-unlocking embedded printing: mesh interference and information invisible embedding mesh tone, particularly embedding traceable character strings or patterns in printing, and identifying and tracing by means of an unlocking sheet after printing; each layer can be embedded, the more layers printed, the more channels embedded, and the more information can be embedded.

Thirdly, personalized feature dot printing: the micro character dots are made by adopting the coding information, or the printing of different printing dot forms with the coding information and traceable identification is specially agreed, thereby showing the individuality and uniqueness, being easy to identify and being difficult to imitate. Generally, the printing is carried out on the dots with the anti-counterfeiting individual characteristics (prototype dots, oval dots, square dots, frequency modulation dots, triangular dots, and embedded alphabetical character microcode information).

Embedding micro code character information: embedding the plain code or the secret code information needing to be hidden and embedded into vector lines, vector patterns and vector characters in a prepress plate making mode in the form of micro code characters.

The invention realizes the hiding and embedding of information such as precision, net points, vector lines, micro-code characters and the like in printing microscopic dimensions.

Dimension of the special effect material:

functional special-effect ink (white ink, transparent ink or fluorescent ink) is introduced to be matched with printing for plate making, so that printing and the special-effect ink are combined, and information hiding not only has invisibility, but also has interesting, ornamental, artistic and high-tech experience and feeling. Scanning and copying prevention can be obtained.

In the invention, other materials are utilized to assist in hiding information and embedding in the dimension of the special-effect material: such as: invisible transparent ultraviolet conversion ink, spot color special effect spectrum ink, electromagnetic induction information ink and the like, and other printing invisible embedding (anti-counterfeiting, measurable and readable) and the like realize printing visual invisibility.

The printing macro-dimension and the printing micro-dimension are used simultaneously, so that the personalized high-fidelity printing and color anti-counterfeiting tracing problem of a common simple supply chain can be realized. In particular, the macroscopic dimension ink color gamut characteristic has simple visual sense and is easy to identify, and belongs to first-line anti-counterfeiting. The traceability information which is only hidden and expressed by macroscopic color has limited capacity, and the combination of other dimensions such as microcosmic and the like is needed for embedding more information;

the printing macroscopic dimension, the printing microscopic dimension and the special effect material dimension can be used simultaneously to realize one case per product and one case per batch, and the printing microscopic dimension, the printing microscopic dimension and the special effect material dimension can be deeply traced, identified and anti-counterfeiting.

Multilayer: the multi-layer of the invention refers to that the whole industrial chain spans multi-layer different enterprises, such as: off-brand, primary, secondary, tertiary … … multi-tier vendors. The complex supply chain of the group is provided with a special addressing traceability rule, and all accurate and rapid traceability printing of the whole industrial chain can be realized, wherein the traceability printing is faithful to the original better than the original.

The complete traceable system and method steps of the invention can be divided into 7 basic steps: the method comprises the steps of firstly, establishing a system (a whole industry chain traceable system), secondly, establishing two information directions (transverse coding width and longitudinal coding depth), thirdly, establishing a multidimensional, multilayer and additional traceable addressing mark (color addressing, position addressing and color and position combined addressing), fourthly, printing and embedding means, and fifthly, supporting screen compensation and process control, sixth, detection, inspection and optimization, and seventh, recording the final record. Note: constructing a color separation model is only one branch of the macroscopic color gamut angle in a multi-dimensional system,

1) tracing enterprises: the related enterprises in the industry chain are taken as objects or ranges, and include brand manufacturers, channel sellers, primary suppliers, secondary suppliers, tertiary suppliers and the like, and sensitive suppliers and sale distributors with traceable values can be involved and included. So as to accurately trace back to the enterprise.

2) Tracing the specific production batch number, date and origin information of an enterprise: the method includes taking information such as specific origin, production and sales lot numbers and dates of each enterprise of the whole industrial chain as objects, incorporating a traceable content system so as to accurately trace the specific lot numbers and production dates of problem products of problem enterprises, conveniently lock the production dates and lot numbers of the problem products at the same time, and conveniently trace the source (namely, construction of traceable information models, namely, a traceable model of longitudinal depth and transverse width is constructed by listing the specific production and sales information of each related enterprise and corresponding enterprises, and recording records and facilitating subsequent query).

3) Traceable addressing rules: for clustered complex supply chain architectures, it is necessary to design traceable addressing rules by color, or by location, or a combination of color and location.

4) Print embedding method and means: and selecting an invisible printing information embedding mode according to the specific printing manuscript characteristics. The principles are not limited to methods, materials, tools. Hidden traceable information needs to be embedded in printing, the traceable information is designed according to multi-dimensional, multi-layer and addressing traceable rules as long as the traceable methods capable of realizing invisible printing are not limited, and the traceable information is designed according to the multidimensional, multi-layer and addressing traceable rules (such as screen tone image information hiding and embedding, vector pattern information hiding and embedding, special-effect ink hiding and embedding and the like, and specifically comprises micro-code characters, grating latent images and unlocking, ultraviolet ink, electronic information induction ink, optically variable invisible special-effect ink and other various invisible printing and identification means, so that the invisible design freedom degree is increased, the true manuscript is achieved, the embedded information hiding effect is good, and the quick reading and checking are good).

For the halftone printing with large information amount, multiple related enterprises, and the capability of adopting multi-color separation to expand the color gamut and color separation plates (up to 12 colors), and printing the original 4-Color (CMYK) printing conversion layer with 6 colors, 7 colors or 12 colors, the method can obtain larger embedded information capacity. The freedom of the hidden embedded design is higher.

By visual or simple means, such as: the magnifying glass, the grating sheet, the ultraviolet light and the like are convenient to read manufacturer information and specific batch numbers hidden in printing, are accurate to original notice and superior to original printing, and achieve the purposes of rapidness, accuracy, traceability of the whole industrial chain, printing uniqueness and obvious anti-counterfeiting functional characteristics.

Forward one-time system information generation (embedding), market reverse rapid accurate system traceability (identification), and wide application in any printing or packaging.

In addition, it should be noted that: for the sake of good, after the design printing is completed, it is best to perform a physical proofing and have a verification test link, optimize the process parameters and ensure the best visual effect. And if not, circulating and repeating until the product passes through.

The printing personalization is realized, and the minute on-site accurate and rapid traceability of brands and main sensitive suppliers of the whole industrial chain is realized. The method can not only trace the enterprises, but also precisely trace the specific production date, batch number and origin of suppliers at all levels.

Finally, the complete verified information, identification method, etc. are summarized to the industry chain traceable information modeling table. For subsequent retrospective inspection.

As shown in fig. 1, the present invention provides a traceable printing method of a printed product, including the steps of:

step 101, acquiring whole industry chain tracing information of enterprise information related to a whole industry chain of commodity manufacturing; the invention also obtains the whole industry chain tracing information represented by the cipher by coding the whole industry chain tracing information, and prints the cipher; plain printing may also be used. That is, the information on the enterprises and production distribution related to the upstream and downstream of the whole industry chain of the product manufacturing, and the information (enterprise name, sales, origin, production lot number, date, etc.) for identifying important channels, suppliers, and sensibility traceability of the whole industry chain are acquired, thereby constituting the whole industry chain traceability information. And when the secret code is required to be printed, assigning the code to the whole industry chain tracing information to obtain the whole industry chain tracing information represented by the secret code.

Step 102, determining an addressing mode of the whole industry chain tracing information; the addressing mode is as follows: or addressed by color, or addressed by zone, or addressed by a combination of color and zone.

103, establishing a color separation model according to the original color gamut of the printed matter and the color requirement for printing matching;

performing data measurement on original color gamut (RGB image, CMYK) and color using requirement (special color Pantong color card or object sample sheet) of a printed matter, obtaining basic judgment of the original color of the printed matter, drawing a Lab color gamut plan, selecting an ink combination matched with the printing color gamut, determining a basic color and color separation model of the printing ink, performing sample printing through primary color, primary color overprinting secondary color and color object, and verifying the matching condition of the characteristic spectrum of the printing ink and the color gamut. Besides four-color CMYK printing, a conventional RGB three-primary color or CMYK + Nn + Wn multi-color separation printing mode can be selected as required, wherein Nn is an ink color for expanding color gamut, can be orange, green, purple, scarlet and the like, can expand one color or can be multiple color gamuts; wn is a color for special effect inks, such as: one or more of fluorescent color, silver ink color, electromagnetic information ink color, and the like may be used. n is 1, 2,3 … ink quantity.

Step 103 can implement the color separation model of the printed matter in two ways: one is to use the input of the spectral data of the fixed base color ink, with the help of third party professional color separation software, such as: ICISS color separation software, or PACKZ + ALwan, or GMG to construct a color separation model of the printing base color ink, and color gamut characteristics, tone-containing characteristics and neutral gray characteristics. And then, color management is carried out, and a digital screen and a real object are subjected to sample making to verify that the color separation is accurate, the color is full, the gradation level is not graded, the jump is not generated, and the neutral gray is not biased, so that the construction of the accurate color separation model of the fixed ink basic color combination is completed. The other method is that Pantong overprinting color matching data in the existing Pantong seven-color card are used for replacing the special color in the printed manuscript to obtain a color separation model of the printed manuscript; the pantone overprint color is one or more colors of yellow, magenta, cyan, black, orange, green and purple.

Ink color matching data and physical color cards (paper cards, plastic film cards, metal color cards, and the like) which have been self-created and verified by third party software or pantone color C card data in the past may also be used, in particular: the method comprises the following steps of constructing a wide-color-gamut color matching data physical color card of 3 colors of RGB, 4 colors of CMYK, 5 colors of CMYK + O orange, or + G green, or + V violet, 6 colors of CMYK + OG, or + BG, 7 colors of CMYK + OGB, 8 colors of CMYK + ROGB and the like of fixed primary colors, and constructing a substitute original spot color by using color separation and color matching data of a fixed primary color group or a spot color separation database.

Step 103, establishing a color separation model according to the original color gamut of the printed matter and the color requirements for printing matching, specifically comprising:

measuring the color gamut of the RGB manuscript of the printed product in a PS software environment, and judging whether all colors in the manuscript of the printed product are in the color gamut space of CKYK; the image-form printed matter can be directly used as an RGB manuscript of the printed matter, and the real-form printed matter can be shot or scanned to obtain the RGB manuscript of the printed matter. Clicking "gamut alert" in the PS software environment observes the extent and degree of image out of gamut (CMYK) -the range and degree of silver gray, clicking "gamut alert" to display without silver gray, i.e., not out of CMYK gamut.

If the judgment result shows that the color separation of the original manuscript of the printed matter is carried out, the original manuscript of the printed matter is directly subjected to color separation by using a 4-color separation model built in a CTP publishing process after being converted into a PDF standard format under the environment of PS software environment or AI image and text design and manufacture software environment and under the environment of direct color separation AI image and text design and manufacture and editing software environment, so that a CMYK4 color separation printing plate of the original manuscript of the printed matter is obtained; or performing color separation based on RGB base color ink on the original manuscript of the printed matter by using third-party color separation software to obtain an RGB base color ink color separation model of the original manuscript of the printed matter; the third party color separation software is one of ICISS color separation software, GMG color separation software, CGS color separation software, PACKZ + ALwan, or the mainstream mature high-end multi-color separation color management software in the market such as department of Esciaceae;

104, embedding the traceability information of the whole industry chain into an electronic image-text printing plate of the original manuscript of the printed matter in different invisible submerging modes by adopting a circular proofing verification mode according to the characteristics of the original manuscript of the printed matter, the addressing mode and the color separation model to obtain a traceability printed matter composite printing plate file;

according to addressing and reading modes, an information invisible plate making method is matched with design and layout making on a corresponding color plate for an original (image dots, vector solid, lines, characters and the like), particularly, microscopic dot editing, net shape change and information character embedding are carried out on a screen adjustment, reading verification and cyclic optimization are carried out until satisfaction is achieved (note that the linear compensation and matching of the dots are carried out in advance for information latent images of different dots, and the latent images can fail to become development quality accidents if the latent images cannot be obtained).

When embedding is carried out according to positions, the condition that multiple layers of information are hidden and embedded in the same position needs to be matched with the optimal embedding ranges of a spot color overprinting mode, a screening angle and a screen dot tone for each embedded color layer of a color separation model, the screening requirements are met, the screen is not collided, the information hiding requirements are met, and the whole production chain tracing information hidden embedding and effective reading of each embedded layout position can be ensured (different screen types and different precision local screening need to be linearly compensated and matched).

According to the steps, different industry chain tracing information in the whole industry chain tracing information is respectively and effectively embedded into the corresponding printing layout through cyclic optimization, and the object is subjected to sample proofing verification to obtain the effective printing plate of the traceable printed product.

And 105, embedding the traceability information of the whole industry chain into the electronic image-text printing plate of the printed manuscript in different invisible submerging modes by adopting a circular proofing verification mode to obtain the traceable printed matter synthetic printing plate.

Step 105, embedding the whole industry chain tracing information into an electronic image-text printing plate of a printed manuscript in different invisible submerging modes by adopting a circular proofing verification mode to obtain a traceable printed synthetic printing plate, and specifically comprises the following steps:

The identification verification mode firstly needs to be embedded into the invisible printed information and does not display, secondly the printed sample sheet is convenient and reliable to read and easy to realize conventional printing, and specifically comprises the following steps:

And 106, based on an anti-counterfeiting printing technology, outputting and printing the traceable printed matter printing plate file and the standard compliant printing plate to obtain the traceable printed matter of the whole industrial chain.

The invention also provides a traceable printing system of a printed product, which is characterized by comprising the following components:

the whole industry chain tracing information acquisition module is used for acquiring whole industry chain tracing information of enterprise information related to a whole industry chain of commodity manufacturing; and the code assigning module is used for assigning codes to the whole industry chain tracing information to obtain the whole industry chain tracing information represented by the secret codes.

the color separation model establishing module is used for establishing a color separation model according to the original color gamut of the printed matter and the color requirement for printing matching; the color separation model building module specifically comprises:

the first color separation submodule is used for converting the original of the printed product into a PDF standard format in a PS software environment or an AI graphic design making and editing software environment if the judgment result shows that the original of the printed product is positive, and then directly separating colors of the original of the printed product by using a 4-color separation model built in a CTP publishing process to obtain a CMYK4 color separation printing plate of the original of the printed product; or performing color separation based on RGB base color ink on the original manuscript of the printed matter by using third-party color separation software to obtain an RGB base color ink color separation model of the original manuscript of the printed matter; the third party color separation software is one of ICISS color separation software, GMG color separation software, CGS color separation software or PACKZ + ALwan or Esciaceae multi-color separation color management software;

a second color separation submodule, configured to, if the determination result indicates no, that is, if the original color gamut exceeds the CMYK4 color gamut, measure data or a color sample of a color exceeding the CKYK color gamut space, as a basic color to be expanded outside the CMYK ink color gamut corresponding to the original, determine a color density, or Lab and Lch values, of each expanded basic color, supplement the ink color gamut space of CKYK with the expanded basic color, draw an ink color gamut space diagram including primary colors and secondary colors based on "CMYK + expanded basic color" of the Lab or Lch color space, and determine whether the original color gamut of the printed matter is included in the expanded ink color gamut space (conditional ICC can use a prepared standby ink printing characteristic data target, directly obtain a tinplate ICC, and automatically scan and draw the ink color gamut space diagram with an i1-iO dataset); if the drawn expanded ink space colors are all larger than or equal to the original color gamut space, determining that the matching of the ink primary colors is feasible, and laying feasible conditions for the matching of the ink color gamut in the early stage for the subsequent construction of color separation models; if the expanded ink color gamut space is still insufficient to make up the original color gamut space, the insufficient part needs to be expanded, adjusted and added with new primary color ink, or the color density of the basic color needs to be enhanced by the insufficient part of the ink color gamut space, so as to make up the insufficient ink space; circularly drawing ' CMYK + extended basic color ' ink color gamut spaces containing primary colors and secondary colors based on Lab or Lch color spaces ' respectively and comparing the ink color gamut spaces with the original draft color gamut; if the ink color gamut is larger than or equal to the original color gamut or within the tolerance range accepted by the client, determining the ink color gamut matching of the XMYK + expanded basic color; the method can measure the spectrums of all the primary color inks to be used, adopts third-party multi-color separation software to construct a color separation model based on the color gamut of the inks, completes color separation of the original manuscript of the printed matter, and obtains the wide-color-gamut printing color separation model of the original manuscript of the printed matter.

The invisible embedding module is used for embedding the traceability information of the whole industry chain into an electronic image-text printing plate of the original manuscript of the printed matter in different invisible sneaking modes by adopting a circular proofing verification mode according to the characteristics of the original manuscript of the printed matter, the addressing mode and the color separation model so as to obtain a traceable printed matter composite printing plate file; the invisible embedding mode comprises one or more combinations of latent image embedding, micro code character screening embedding, local screening embedding, micro code character embedding, vector embossment character embedding and special effect invisible ink printing plate making embedding.

The method and system for traceable printing of a printed product of the present invention will be described below with reference to examples.

The first embodiment is as follows:

a metal packaging sheet material can be traced and is an anti-counterfeiting printing case in the whole industrial chain. The layout structure of the original is shown in fig. 3, the original color is printed with 4 colors +12 spot colors, the gamut range is expressed by dots (each packaging unit is four colors +3 spot colors), and then the maximum 8 colors can be used for replacement (new ink combination is expressed in a triangular shape) through gamut analysis, that is: CMYK + P orange special + P purple special + P blue 2 special + P green special 8 new primary colors constitute the ink set.

Each unit of the original design in fig. 3(a) is CMYK + spot green, spot blue + this series of characteristic spot colors, and there are 12 colors (CMYK4 +6 spot + common green and navy blue) after makeup, so that on the basis of the faithful original draft, after packaging and final forming, the traceability of the whole industry chain can be realized quickly from a shelf.

Step 1, analyzing package printing original and printing process characteristics, determining a color gamut range of spot color ink (measuring all 6 spot color Lab values, drawing a color gamut diagram (including secondary colors) printed by original ink in a package design, evaluating whether all the colors can be in CMYK + O orange G green B purple within 7 colors of a printing model), if so, determining that the printing process prints according to 7 colors, and if not, adjusting ink base color parameters to ensure all the color gamut coverage. And simultaneously checking whether the format of the packaging printing picture is RGB format, and respectively running third party multi-color separation professional software on an apple machine or a PC to finish multi-color separation execution.

Specific analysis ink measurement and gamut analysis: 1) the package printing is a series of imposition printing of 6 different tone packages (vertical printing six different tones combined in a series). Each printed small product unit is 4 colors +3 spot colors. Wherein, fig. 3(b) and (c) respectively show the package of 02 lines and 03 lines in 6 varieties, top green and head portrait blue side lines are respectively common spot colors P green 2 and P blue 2, background colors are designated as "pan-through" spot colors, wherein, fig. 3(a)01-06 series are respectively P purple spot color, P blue spot color, P orange spot color, P green spot color, P rose spot color and P red spot color, so the original color can be printed according to the traditional requirement of 4(CMYK) +6(O, M, G, O, V, B) +2 common spot colors, and 12 color groups are provided (corresponding to small dots + P green 2, + P blue 2 marks in the color gamut).

2) Using an alicity colorimeter, a D65 light source, a 2-degree viewing angle, and actually measuring 12 pantone numbers provided by the original, obtaining Lab data of each spot color, and drawing a Lab color gamut plan view, as shown in fig. 4, taking the outermost saturated color point of the color gamut as a printing base color, and identifying with a triangle. In the illustration, 8-color printing of the triangular logo may be used instead of 12-color printing of the circular logo. And verifying by using a digital proofing or physical proofing mode, testing and confirming to pass, and if deviation exists, adjusting and optimizing to ensure that the spot color in the color gamut is replaced by the minimum primary color or primary color overprinting. To this end, the basic process of package printing: 4 Colors (CMYK) +4P (P orange, P green, P purple, P blue 2) are basically confirmed, and a foundation is laid for subsequent color layer embedding (8 color layers can be embedded), and also for traceable anti-counterfeiting color characteristic identification (the characteristic of a personalized ink printing spectrum can be used as the 'DNA' of printing).

And 2, constructing a whole industry chain (longitudinal-transverse) traceable information model, and determining whether the optimal traceable address searching rules (according to the specified positions of the images, such as A, B, C, D positions in 2(b) and 2 (c)) are respectively embedded properly. After the confirmation is accurate and correct, the embedding is confirmed to be feasible, and all the arrangement records are checked for future use, as shown in the traceability information inspection summary table in table 1.

TABLE 1 traceable information summary sheet

Specifically, it is to be noted that: the main tasks of the step 2 are to design, plan, trace the content and position of the embedded information, and the feasibility of the embedding means, and complete a summary table for subsequent examination: and effective traceable embedding of all information can be realized by taking 1 brand merchant, a third-level supplier and 4 ABCDs as position points.

And (1) determining the contents of all related enterprises (width range of the industrial chain) and longitudinal traceable information related to the whole industrial chain in the transverse direction, such as specific origin, lot number, date and the like, so that the package can be traced not only to the related enterprises, but also to the lot number, origin and the like of the problem products accurately. Due to the potentially complex supply chains, associated businesses, and large volumes of information involved, content may be "tokenized" for convenience, e.g., see table 1, Q1-Z0, representing terminal brand or sales channel information; Q2-Z0, which represents information on the origin of the terminal brand; Q3-Z0, show terminal brand production batch number, date information, etc., and so on, can greatly simplify the occupation position of information embedding. And records and queries through a traceable information recording table.

And (2) extracting one of the unit small package design printing originals, for example, as shown in fig. 3(b), and arranging a similar nine dynasty emperor grid at the position of the small package unit (compartmentalization). The technical feasibility of using printed invisible embedding for each area (best embedding location point, embedding color layer, etc.) was analyzed. And (4) designating the position (designating the ABCD position in a unified way), and embedding traceable information into a dot latent image and confirming feasibility.

The area of the screen dots with the best effect is 25-65% because the screen dot latent image is embedded. Therefore, it is necessary to analyze whether the color layer dots in each region of the ABCD meet the embedding condition.

For example: for the 02-series blue beverage in fig. 3(a), i.e., the legend shown in fig. 3 (b): and (2) area A: the light green plain net is formed by overlapping 100% yellow and 35% P green, and the P green in a 35% area is selected as a latent image embedding layer, so that the latent image embedding condition is met, and the technology is feasible. Similarly, the B, C bit blue gradual change area is formed by three-color overprinting of 75% cyan, 25% magenta and 25-65% gradual change P blue, and three-color overprinting can be used as an information embedding layer. And D region: the color is darker, the color is cyan, magenta, P blue and black 4, magenta dots 50% of a D area are taken, and the black dots are simultaneously made by multilayer cross overprinting, so that the effect is better. However, the screen dot requirement of the latent image embedding method is high, and the security and the identifiability of the color layer embedding identification which is controlled to be 25-65% are best. If the effect of the latent image embedding method is not good, other information can be used for screening and embedding, and the technical optimization and confirmation of the color layer can be completed by analogy.

After the step (3) and the step (2) are finished, the printing quality finished products are summarized and listed in a chart 1 for subsequent checking and traceability of the printing quality finished products.

And 3, completing the embedding analysis and confirmation (position, color or embedding method) of the residual unit packaging information in the step 2 on the basis of other series of unit multi-color separation according to the step 2.

And 4, according to a frame of multi-dimensional multi-layer printing invisible embedded information, using the position areas, color layers, applicable latent images and the like (in the case of the scheme, the large-area dots are more suitable for latent image embedding, and the latent images are preferentially used, but other embedding means can be used, so that the hidden performance is stronger) confirmed in the

steps

2 and 3 at A, B, C, D and 4 positions respectively. The computer plate-making output before printing is respectively applied (for example, Kodak printing can be realized by quick CTP printing publishing process, the screen hanging mode is set as amplitude-modulated screen, the screen hanging precision is set as 175 lines, the screen shape is set as circular lattice points, the multicolor screen hanging angle is generally CMYK normal screen hanging angle, other C and O orange special colors are same as the color of O, M and G green special colors are same as the color of G, K black, V (purple) and B (blue) are same as the color of V (purple) and B (blue), and yellow (Y) is single, so in the scheme, the P blue special (B), P purple (V) and K black are same as 15 degrees, the P green (G) special and M magenta are same as 75 degrees, the P orange special (O) and C are same as the angle of 45 degrees, other Y yellow are 90 degrees, and the screen collision is prevented.

All normal outputs obtain a unit package layered diagram with network points, and then information (brand company traceability information, information of primary, secondary and tertiary supplier production factories, batch numbers, dates and the like) embedding is completed on a specified color plate of a specified area.

The specific operation flow is as follows:

step (1) according to the requirements of multi-dimensional multi-layer printing invisible information embedding and the complete traceable system and method steps of the invention, the method can be divided into 7 basic steps, and in macroscopic color dimension, the network output (paying attention to the network hanging precision and angle setting) is carried out on the unit packaging manuscript except the vector characters, so that the method is ready for the fine embedding of the network points in the microscopic angle.

The "multidimensional" concept here mainly refers to: macroscopic color latitude, microscopic dot latitude and special material or invisible ink dimension. The technical characteristics are mainly embodied on the combination of colors and dots. Experience macro color and micro dot features in multiple dimensions by case (special materials are explained in the following cases): on one hand, the macroscopic visual color dimension is emphasized, and the printing process is not a simple CMYK narrow color gamut printing process, but is a new printing process of an RGB wide color gamut; on the other hand, the micro-fine screen dot dimension is emphasized, and not only the screen dot precision and shape, but also the self-defined character screen dots, pattern screen dots and the like are included, so that screen tone printing and embedding of hidden information become possible.

In step 1, all 6 series package press drafts (series 01-06 in fig. 3 (a)) are converted from original CMYK +8 spot color, 12 spot color documents to visually equivalent 8 color documents. The route has two steps: firstly, the packaged source file is totally subjected to color separation to 8 colors again through apple ICISS multi-color separation software. The path method comprises the steps of opening and operating a package file on an apple machine, replacing all other color contents except vector characters and bar codes in the package file with RGB image drafts, adopting Dutch high-end printing multi-color separation ICISS software, inputting selected 8 primary color ink color spectrum values (Lab values), wherein 8 primary color ink colors are CMYK + P green, P orange, P blue 2 and P purple, and constructing a color separation model of a specific 8-spot color of the case by utilizing CMYK + P green, P orange, P blue 2, P purple and secondary color chroma values (Lab) of the primary colors, or only finely adjusting (CMYK + OGBR) on the basis of the original 8-spot color so that neutral gray and color deviation are within a visual deviation control range. After one pass, the original 12-color printed package file of all 6 series can be simplified into a package manuscript file only containing 8 colors, so that the 12-color effect of the original design can be printed under the 8-color ink system defined by the embodiment, and the printing and copying of the original manuscript are realized. And secondly, referring to color separation color values of a pantone 7-color (CMYK + OGV) wide color gamut color spectrum, the 4-color documents of each unit draft are not changed, only 8 special colors (P green, P orange P purple, P red, P rose, P blue, P green 2 and P blue 2) related in the original are used, a pantone 7-color special color card is used, the closest 7-color separation color matching data file is found, 7 special colors in the source file are replaced by 7 color separation color values, the P blue 2 special color is not changed, and the whole is controlled within 8 colors (CMYK + OGV + P blue 2). The Pantong 7 color is relatively simple to replace and manufacture, and the comparison of the Pantong 7 color can be completely finished in AI software. Note that: either the first or the second type is verified to pass through digital proofing or physical proofing.

In this example, ICISS color separation is performed as an example, after multi-color separation into a draft is performed according to a new 8-primary color ink (CMYK + OGV + P blue 2), ICISS software is run on an apple computer, and the rest of all package series originals are output in multi-color separation (although specific color layers are different, and there are only 6 colors). The actual color separation panels for each cell are indicated by a triangle. Similar effects can be obtained by substituting pantone 7-color separation chromatography. Without ICISS software, Pantong 7 color separation chromatographic spot color substitution is proposed, and third-party software such as PACKZ + ALwan, GMG or CGS can be used for printing a characteristic ICC file by a fixed color group to obtain an actual ICC data set and directly obtain a color separation file by calling a multicolor ICC through software.

Taking GMG as an example, according to a determined CMYK + OGV + P blue 2 as a new printing primary color group, reserving P blue 2, printing an 8-color ICC characteristic color table for metal printing to obtain 8-color ICC, converting an RGB color space into an 8-color ink fixed color separation space through GMG multi-color separation color management color conversion software, and obtaining a printing 8-color file (the ICC lookup table is used for color separation, and if the software has maximum 7 colors, the suggested primary color inking adjustment is not more than 7 colors control).

And outputting all screen-hanging points of the color separation manuscripts of the 6 series packaging units. The printing screen hanging output adopts Kodak Neerge CTP flow, such as: setting the net hanging mode as an amplitude modulation net, setting the net hanging precision as 175 lines, setting the net dot shape as a circle, setting the net hanging angle of the multi-color separation amplitude modulation net as 8 colors respectively: the same angle of C green and P orange is 105 degrees; the angle of M product is 75 degrees with P green product (G), and the angle of K black, V (purple) and B (blue) is 45 degrees. Therefore, the present embodiment: the same angle of P blue, P purple and K black version is 45 degrees, the same angle of P green and M magenta version is 75 degrees, and the same angle of other Y yellow versions is 90 degrees, so that the net collision is prevented.

The specific color layers and dot conditions of each specific area (i.e., ABCD area) are examined.

(2) And (3) embedding the 'information character' in the microscopic dot dimension. Checking the micro screen point appointed area, checking if the screen point level is 25-60% (the level area suitable for embedding the latent image screen point information), embedding the layout, area and color layer of the latent image screen point information into the table 1, and tracing the information (character) of the industry chain.

Such as: take 02 as an example. First, embedding location division: according to Table 1, the brand name provider information area has a drop point of area A, the first provider embedded area has a drop point of B, and the second and third provider drop points are C and D, respectively. Next, referring to Table 1, based on the above analysis, the latent image-unlocking embedded information character mode is preferred, and multi-layer overprint embedding or compressed code character embedding (such as Q0-Z1 shown in Table 1) can be considered, so that the normal embedding and identification of the limited space can be guaranteed.

The specific embedding method of the latent image (note: the latent image is divided into a screen dot latent image and a vector line latent image, which look different but have similar operation principles) is as follows:

opening a computer, importing a 02-series unit color separation website file, clicking a P green special color layer, embedding brand name information into a website at the position of an A area, namely, inputting brand name related information content in a table 1 on the website at the position of the A area of the P green special color layer: the method comprises the following steps of firstly, selling on the exposed continents, and secondly, information of origin: "Chengde 02", the third batch number or production date information: the word "2020.10P 1"; the arrangement is reasonable, and the minimum character of the latent image is larger than 8 mm. And selecting all information fonts on the dots, carrying out colorless and transparent setting, and translating all the dots selected by the font envelope lines by half to 1.5 dot intervals according to the screen hanging angle (specifically, the effect is adjusted to be good in the intervals).

And manufacturing a black-white alternate densely-distributed net with the black-white spacing consistent with the mesh point size to serve as a screen verification effect test sheet. The translation spacing of the mesh points can be adjusted for multiple times, and the best matching effect can be obtained through verification and test.

According to the same operation steps, a latent image embedding mode is adopted, and according to the table 1, the first supplier information embedding is completed in the area B, and the second supplier information embedding is completed in the area C. Only on the opened computer picture layer, the B area can be selected from a Chinese pinhong M version and a P blue special 2 version, and the two picture layers are respectively embedded.

Selecting the M plain red strip dot color plates, finding a B area, and implanting a first supplier enterprise name code character into a computer on a dot layer of the B area: "ORJ", origin code: j3 (Beijing 3 factory), after adopting Song style to thicken, selecting font graph and mesh point to merge, the font is transparent, the actual effect is to cut the mesh point according to the font outline, then along the magenta screen hanging angle 75 degrees, translate 1 mesh point distance (left and right), namely complete the flat red version B area font information latent image embedding; and continuing to select the P blue special 2 site edition meeting the site conditions, and also continuing to implant the just remained first supplier production batch number information in the B area: "2020.08-25P" (batch 25, 8.2020); so far, in the same area B, the embedded M article and the embedded P blue 2 are respectively hidden at the same position according to the table 6 and corresponding to the first supplier content (supplier business name, origin, batch number date, etc.), and only the unlocking angle is different. At that time, the hidden information of the magenta edition and the 2 edition special color basket can be respectively unlocked and identified after printing.

And then, manufacturing, checking and verifying test pieces (black and white interval network lines) in the previous step, and optimally adjusting the translation gap until the requirements are met.

Selecting area C according to the same operation to complete the second supplier, the name character information of the enterprise (Shanghai Baoyi company 'SHBY'), the origin information 'QA'; the M version is selected again, and the production date and the batch number are embedded, namely "2020.08-1P" in batch 1 in 8 months in 2020.

The same operation was performed, and the region D was selected to complete the embedding of the third supplier information (company name: Shanghai super color ink "super"; origin: SH1 "; date of manufacture and lot number: 6/2020, No. 4, No. 2020.06-4P) according to the information in Table 1. Note that: the D area is darker in color, three color layers are selected for selection, the color layer area with the mesh points not more than 65% is selected to be better manufactured, the mesh points and the ground color are selected to be better in large light and shade difference, and the K black plate and the M magenta plate are selected to be manufactured and embedded.

Up to this point 02, the information embedding printing plate making is completed. The embedding effect is shown in fig. 5, where fig. 5(a) is an embedding effect diagram at a position, fig. 5(B) is an embedding effect diagram at B position, fig. 5(C) is an embedding effect diagram at C position, and fig. 5(D) is an embedding effect diagram at D position.

System 03, information embedding. Besides the embedding of the latent image, other invisible net hanging information can be embedded and identified by a magnifier.

Note that: local net hanging, especially adopting net points with different precisions and different net shapes or embedding personalized self-defined net points, and because the printing brings the difference of the enlargement of the tone of the net points, compensation data or management control needs to be done in advance so as to obtain the equivalent tone net point enlargement visual effect and avoid the printing and visualization of embedding character or pattern information. As shown in fig. 6, the normalized adjustment optimization of the tone curves and neutral gray curves of 4 kinds of screening effects to be applied, which are combined by different accuracies (175 lines and 350 lines) and different dot shapes (circular nets and square nets), wherein fig. 6(a) is the screening effects and tone curves of different accuracies and dot shapes, fig. 6(b) is the optimized screening effects and tone curves of different accuracies and dot shapes, fig. 6(c) is the neutral gray screening effects and neutral gray curves of different accuracies and dot shapes, and fig. 6 (d) is the optimized neutral gray screening effects and neutral gray curves of different accuracies and dot shapes. The linear optimization curve adjustment curves are all named separately for subsequent invocation. The specific adjusting method comprises the following steps:

making 21-order standard full-gradation model bars (0, 2,3, 5,8,10,15,20,25,30,40,50,60,70,75, 80,85,90,95,98,100), three-color neutral gray signal bars (C \ Y \ M, 5\3\3,10\7\7,15\10\10,20\12 \12,30\10\10,40\30\30,50\40\40,60\50\50,70\60\60,80\70,90 \80\ 80);

in the publishing process of CTP before printing, 8 specified colors (CMYK + OGBP blue 2) with the actual standard color density after standardized output are normally printed, and the vehicle speed and the machine station color sequence are recorded. Performing tone test on the printed signal strip, drawing a tone curve, such as 4 linear curves with different colors in fig. 6(a), finding a linear compensation interface through a CTP publishing process (such as Kodak Netze), respectively obtaining linear expansion curves according to the common precision (round nets 175 and 350) and different dot shapes (frequency modulation, square and round) of the ink set (CMYK + OGBP blue 2), calculating a compensation value, and then establishing corresponding output curves: c 'M' Y 'K' + O 'G' B 'P' blue 2. And printing again, and circularly optimizing until 4 curves are basically superposed into a standard (gray) expansion curve after printing. And simultaneously, adjusting the parameters of the ash balance curve (mainly CYM three-color ash), and linearly adjusting the parameters to the standard values (grey), so that the visual effect is close to neutral ash.

Family 03, information embedding operation experience:

as in the 02 series, the 8-color draft (actually only 7 colors, but no P purple, and ICISS color separation or pantone 7-color ink data substitution can be obtained to obtain an equivalent color-separated draft) after color separation is completed is subjected to microscopic partial screening before printing and respective information embedding platemaking according to the Area (ABCD) 4 and the color layer (the halftone dot and gradation of the applicable color layer in the designated area). Fig. 7 shows the conditions of ABCD area microscopic dots and tones, wherein fig. 7(a) is a schematic diagram of position division, fig. 7(b) is a schematic diagram of color separation, and fig. 7(c) is a schematic diagram of screening.

Opening the computer, and importing 03 series unit halftone dot color separation files in the AI typesetting software. And (3) seeing each color plate file, selecting a target color layer, matching a pre-drawn red position square frame with the dot file to obtain accurate dots of each target embedded area, locally screening and embedding information characters in the target area according to the content in the table 1, storing the vector characters to be unified finally, and completely combining and outputting.

The method comprises the following specific operations:

and in the area A, embedding a latent image and identifying a grating sheet. Selecting P green spot color layers, inputting character information, and inserting brand merchant traceable information according to the table 1: the brand merchant- "dew", origin place- "Chengde 02 factory", production lot number and date- "2020.10P 1", preferably adopts latent image embedding, and the font is > 8 mm. The latent image operation is as in series 02, and the above is not repeated. And saving the file for output. An enlarged partial view is shown in FIG. 8 (a).

In the area B, the frequency modulation local net is embedded in the characters, and the characters are identified by a magnifier. Simultaneously selecting the M magenta and P orange special color plates, and inputting character information; according to table 1, i.e. the traceability information of the first supplier of the insert can-making package: a first supplier-orekin group ("ORJ"); country of origin-beijing 01 plant ("J01"); production date batch No. 25 th batch 09/2020 (2020.09-25P); after all input is finished, the typesetting check size is proper (the font is better than 6 mm), the fonts in all areas are selected, local screen hanging is selected in the process of the Yinenjie printing, (and the screen hanging in the fonts is set to be a 3X3 frequency modulation screen is recorded), and the fonts are stored for output. FIG. 8(b) is a partially enlarged view.

(3) And in the area C, embedding a square local hanging net in the font, and identifying by using a magnifier. Simultaneously selecting M pinred and P orange special color plates, and inputting character information; according to table 1, traceability information of the second printing provider should be inserted in zone C: second supply brush-shanghai bao stamp "SHBY"; place of origin-Qian ' an ' QA '; production date lot number-8 months of 2020, lot 1 "2020.8-1P". The method comprises the steps of typesetting, confirming that the size is proper (the requirement for the font is better than 6 mm), then selecting the font, clicking a local screening instruction in a process of printing energy agility, recording and selecting square mesh point settings in the font (the process has a matched local screening function, and various mesh points such as matched square, round, oval, frequency modulation and the like can be selected, if a high-end custom mesh point generator is arranged, a custom character mesh point can be selected, enriching the effect and improving the difference, but the front part relates to tone compensation, only mesh points subjected to optimized compensation can be selected), and storing to-be-subsequently output in a unified mode. FIG. 8(c) is a partially enlarged view.

(4) In the D area, 350 lines are embedded in the font in a partially meshed mode and are identified by a magnifying lens. And simultaneously selecting M, P orange special color version, inputting embedded character information, and inserting third supplier traceable information in the D area according to the table 1: supplier name-Shanghai super color ink company "super color"; origin-shanghai "SH"; date batch number-batch 4 of 6 months of 2020, "2020.6-4P"; and (4) determining the appropriate size of typesetting, selecting all characters, clicking and printing the local screening, activating, recording and setting 350-line screening in the font. And storing to be unified and output subsequently. The functional partial enlarged schematic view of fig. 8 (d).

Based on the production of the 02 series and 03 series, the production of the invisible plate-making embedding of the 01 series, 04 series, 05 series and 06 series can be continued at the ABCD position by analogy. The embedding is carried out specifically, aiming at the case manuscript, the latent image unlocking embedding is preferably adopted, and then the frequency modulation screening embedding or the embedding with different screening precision and screen dot forms is selected for convenient identification. And sequentially embedding information until the 01 series-06 series is embedded.

And 5, detecting and verifying. The manufactured printing plate containing information characteristics, vector characters, bar codes and a synthesized PDF standard output file are subjected to CTP printing electronic desktop publishing process, attention is paid to different areas, different color layers, different local net hanging and linearity, all the printing plates are activated when being respectively output, the CTP plate is output, the subsequent on-machine object sampling and verification effects are given, and the content items in the table 1 are checked and verified one by one:

the normal standard printing and hiding effect is good, and abnormal development is avoided.

Checking all contents to ensure that the embedding is complete and accurate without omission (comparing table 1, detecting information embedding, no abnormity is found);

adopting a grating sheet to carry out unlocking identification on the hidden information embedded into the ABCD position; or the tracing effect is achieved by using simple tools such as a magnifying glass and the like for identification; the development is clear and the identification is effective.

The visual difference between the detection and the original manuscript is rich in color, clear in gradation, good in neutral gray and free of color cast, and the effect of being faithful and superior to the original manuscript is achieved. Quantifying the color difference: the main part CIELab is less than or equal to 3, and the secondary part CIELab is less than or equal to 5;

the above three defects are overcome, and the circulation is improved until the satisfaction is achieved.

And archiving, recording and tracing the final confirmation information for future reference.

Example two:

a hard round container with 18 spot-color printed brand decorative packages is designed, and the production information of supply chain enterprises and brand merchants is shown in figure 12. The packaging printing scheme which can realize multi-dimension (macroscopic color dimension, microscopic fine dot dimension and auxiliary special effect ink material dimension), multi-layer (a whole industrial chain spans a plurality of hierarchical supply chain enterprises) and rapid and accurate traceability of the original document color is obtained. Note: the customer provides a physical sample and a design draft. As shown in FIG. 9, the 18 color blocks are numbered from number 1 to number 18 in the order of P1-P18 in FIG. 10.

Step 1, measuring a Pan (P1-18 special color) basic color block used by a provided real object sample by using an Achromic standard colorimeter (such as an eXact colorimeter, a standard light source D65 and a 2-degree visual angle, and removing paper white), recording Lab data, checking the nearest Pan color number by using the instrument, recording the Pan number and the color difference value with the minimum color difference, and recording.

And contrasting 7 color separation chromatograms published by pantone, visually, qualitatively, subjectively evaluating, verifying and verifying the pantone color number, replacing the original special color with the pantone 7 color overprint chromatograms in a lookup table mode, and respectively recording the 7 color ink color separation data corresponding to pantone and recording. Namely: the printing 18 color is successfully converted into the printing 7 color, and the error is within the tolerance Lab3 by visual and instrument measurement, and the corresponding result after conversion is shown in FIG. 10.

Step 2, according to fig. 12, the whole industrial chain at least includes 5 enterprise components (brand merchants, first-level, second-level, third-level, and fourth-level), and sets latent image unlocking (enterprise name) in an interval of 25-65% of middle tones by determining a color tone tracing addressing rule according to the color characteristics of the package design draft, and the detailed planning rule is shown in fig. 11.

And 3, constructing a traceable information module table on the basis of the step 2, and making a traceable identification zone bit identifier (position or color). Modeling information combing requirements are comprehensive, accurate and executable: comprises the following steps: the width direction of a production chain is as follows: brand traders, suppliers at all levels identified by the brand trader (level 1, level 2, level 3 … at least level 3); information depth: brand merchant (or supplier), origin, production lot number and date; and thirdly, determining an addressing tracing rule and an information embedding reading method, and obtaining a traceable information modulus table as shown in figure 12.

In fig. 12, the record feedback is made according to actual embedding, and the correspondence between the color number and the embedding method is as follows:

and (4) terminal brands: red series, in which magenta M version 13 has "OR" embedded in the latent image; the No. 12P orange adopts local micro-code characters and frequency modulation screening to embed all traceable information 'ORJ-Japan, Beijing 02, 2020.2-3P' of brand merchants; the whole package contains a plurality of No. 13 and No. 12 color blocks which contain traceable information. The latent image is identified by a self-made grating sheet, and the micro code character is identified by a magnifying lens.

Primary supplier: addressing according to purple series, embedding 'CP' in No. 8P purple color plate latent image; no. 9P pale purple local net primary supplier, and "Zhongliang packings-TJ 01, 2020.1-6P" in FIG. 12.

Secondary suppliers: addressing according to green series, embedding 'BY' in the latent image of green version stripe of No. 2 color block P; the P green color No. 3 adopts local screening and micro code characters to embed the secondary supplier information in the graph 12; "SHBY-SH-1 QA 2019.12-2P".

Third-class suppliers: addressing according to blue series, and embedding 'CC' in No. 4 cyan latent image; the No. 5 blue edition adopts micro code characters and frequency modulation local screening to embed all industrial chain information: "Shanghai super color. 012019.9-1P".

Four-stage supplier: addressing in gray, embedding "SG" in gray latent image No. 17; the 18 # black edition adopts micro-code characters and local frequency modulation screening to embed all industrial chain information: "Hebei head Steel-QHD 022019.08-02P".

Specific embedding execution is started on the basis of definite embedding content, definite embedding method and definite embedding addressing rule.

The specific operation description is as follows:

1) and 5 groups of color tones respectively represent enterprises at different levels of the whole industrial chain, so that the tracing and addressing are facilitated.

2) Each group comprises 3 different light and shade layers, which is beneficial to fully and completely embedding the enterprise information, and the space for embedding the record is enough.

3) Each group of colors is observed according to color separation levels, and color separation components of selected color numbers are observed, preferably 25-65% of color layers suitable for latent images, such as:

number

14, 8, 2, 5, and 17 color blocks; if the color is more than 65% and less than 25%, the color is not suitable for the latent image, other means are used, and the micro code characters are used for embedding information for color blocks, preferably real color, which are not suitable for the latent image, in the embodiment, for convenience, such as: 13. color blocks No. 7, 3, 6 and 18. Note that the embedded information can be embedded repeatedly, ensuring that the color block can be read and traced normally through other parts under the condition of being damaged.

4) Computer operation:

4.1, opening computer AI software, importing a spot color vector pattern in the design manuscript, penning the P1-P18 in the design manuscript through a vector spot color block, and completely manufacturing a color separation mode of '4 colors + OGV' 7. The specific parameters are as shown in FIG. 10.

P1 makes conversion "CMYK + OGV", copies 7 layers, changes the original single 100% special color layer into overprint of C%, M%, Y%, K%, O%, G%, V%, overprint layer of 7 layers at most. And storing.

P2 creates a conversion, copies 7 layers, and inputs and stores C%, M%, Y%, K%, O%, G%, and V% in each layer according to the data in fig. 10.

And the conversion of P1-P18 is completed by analogy.

And 4.2, importing the design manuscript, and reconnecting and replacing all the special colors of the manuscript into a 7-color separation chart. No obvious defect exists in the inspection, the digital proofing file is normally output, and the primary proofreading is correct.

And 4.3, entering a printerole process, and obtaining the standard dot color separation electronic layer by using the 7 color separation draft according to the screen hanging precision of 175 lines, the shape of the dot and the screen hanging angle which are the same as those of the first embodiment.

And 4.4, importing the halftone dot draft into AI, and selecting 15 color dots needing to be embedded with latent images or micro code characters from 18 colors specified in the original design.

4.5, latent image embedding is firstly carried out (25-65% of the screen dot range is preferred).

Terminal brand "red tone": and color blocks 12, 13 and 14, and 27% of screen dots of a magenta M edition with 13 colors are selected for embedding latent image information. Because three sets of original color dots are designed, namely a small tank with 10 mm, a middle tank with 12 mm and a large tank with 14 mm, the three sets of original color dots are embedded for abbreviation processing, and the ORJ is replaced by the OR letter, so that the three sets of original color dots are conveniently and clearly displayed and read. And then 12 # is selected to embed the whole industry chain information in a P orange edition by using micro code characters, local frequency modulation screening is carried out by using a circular color block, and 'ORJ-Japan, Beijing 02 and 2020.2-3P' are embedded, and a partial enlarged schematic diagram is shown in figure 13.

Supplier 1 "purple shade": color blocks 7, 8 and 9, selecting No. 8 color to be latent image dot information on 30% dots of a P purple (V) plate, and embedding a Chinese food packaging abbreviated character 'CP'. The color block No. 9 is embedded in a middle grain package-TJ 01, 2020.1-6P' by adopting a frequency modulation hanging net on a P purple layer, and a schematic diagram of local amplification is shown in figure 13.

Supplier 2 "green key": color block: 1. 2,3, selecting No. 2 color to make latent image dot information embedded in 'BY' on a P green (G) 25% version; and embedding the P green color No. 3 into secondary supplier information by adopting local screening and micro code characters: "SHBY-SH-1 QA 2019.12-2P", partially enlarged and schematically shown in FIG. 13.

3 rd supplier "bluish key": color block: 4.5, 6 color blocks, selecting No. 4 to embed latent image dot information in 25% dots of a C edition, wherein the embedded information is as follows: shanghai super-color 'SH-CC' and an enterprise abbreviated number 'CC'. The C100% version of No. 5 is selected, and a frequency modulation net is embedded into 'Shanghai super color 012019.9-1P', and a partial enlarged schematic diagram is shown in figure 13.

Supplier 4 "dark grey": 16. 17 and 18 colors, selecting 17 colors, and embedding the latent image in 36 percent of lattice points of a black plate into first steel 'SG'; and then 18 color blocks are embedded into the solid by adopting a frequency modulation network, wherein the color blocks are made of Hubei first steel-QHD 022019.08-02P.

And 4.6, replacing the same color point in the design original with the embedded color point in the original in situ, and storing.

Note: the size of the embedded latent image is preferably not less than 6mm, and the character screen dots are translated by 1-2 color dot intervals along the screen hanging angle of the color plate. Frequency modulation net hanging: when the round medium-sized color is published, frequency modulation is carried out, so that the color is a spot color effect visually and plum blossom spots are not generated. Embedding effect partial amplification, frequency modulated screen printing partial amplification embedding effect as shown in fig. 13.

And 4.7, recording, summarizing and updating the embedded color number data and the corresponding content for subsequent reading.

And 5, verifying and detecting. And performing physical proofing verification on the manufactured full-industrial-chain traceable anti-counterfeiting printing plate with the information characteristics.

Firstly, according to the figure 12, the embedding hiding effect of the detection information is good, and according to the embedded information model and the identification, the embedding hiding is good, and the abnormal development is avoided.

Checking to ensure that all the contents are embedded completely and accurately without omission. Adopting a grating sheet to carry out unlocking identification on the hidden information of the embedded position; or the tracing effect can be expected by using simple tools such as a magnifying glass and the like for identification;

and thirdly, comparing the visual difference with the original manuscript, ensuring rich colors and clear levels and achieving the effect of faithful and superior to the original manuscript.

Compared with the traditional printing, the invention has the remarkable effects and advantages that:

1) it is faithful to the original, and can overcome the traditional printing limitation and is superior to the original. Because the original is printed by adopting a process of '4 colors + spot colors', and the new technology adopts an RGB wide color gamut multi-color separation wide color gamut printing process (CMYKOGB + spot colors), the color performance is superior to that of the traditional 4 Colors (CMYK). The printing has more bright colors, richer levels and more visual impact force on a shelf.

2) Individuation and high anti-counterfeiting performance. One-product-one-case, one-batch-one-version-one-case, unique printing identity, identifiability and anti-counterfeiting characteristic, and the anti-counterfeiting grade is higher (the printing anti-counterfeiting means is various, and the process, the enterprise and the whole industrial chain are crossed), so that a high threshold is brought to printing anti-counterfeiting cracking and counterfeit copying.

3) The whole industrial chain is accurate and traceable. The method can be traced back to any enterprise of the industrial chain, can also be precisely traced back to the origin, the batch, the production date and the like, and has the remarkable advantages of rapidness and field tracing back for a complex conglomerated supply chain. The problem that products are difficult to trace (the time is 7 days, the products cannot be clearly found and the requirement of the market for quick 24-hour response cannot be met) in the past is effectively avoided, and the products cannot be accurately and only can be bound up and integrally taken off the shelf and are greatly lost. The method really realizes that: the forward supply chain guarantee and the reverse market traceability can be realized, and the whole industrial chain is refined and digitally controlled.

4) The ink-saving printing machine is more suitable for the future printing with multiple varieties, small batch, no ink change and high efficiency. If the printing, especially the packaging printing, uses wide color gamut, the printing technology can be traced, 90% of Pantong special colors can be copied by the 7-color printing according to the international Pantong special color matching color spectrum, the printing process of packaging printing '4 colors + special colors' can be changed into the 7-color spot-free printing process, the ink is not changed, only the plate is changed, the halt color matching time of the ink preparation is greatly saved, the printing quality is improved, meanwhile, the printing efficiency is improved, the special colors are avoided, the cost is saved, and the printing technology is particularly suitable for the requirements of small-batch and multi-variety packaging printing. The invention also has the following advantages:

firstly, the invention systematically constructs traceable information or code-assigning models which are crossed in the whole industrial chain. Longitudinal depth information (original manufacturer, batch number and date information) and transverse width information (whole industrial chain enterprises), and a vertically and horizontally crossed traceable information model.

And printing embedding with traceable addressing channel rules is realized by adopting multi-dimensional (macroscopic color, microscopic embedding and auxiliary ink special effect material) and multi-layer (an industrial chain spans multi-layer enterprises). Multi-dimensional is realized while advising the original: the method comprises the steps of macroscopic color gamut expansion dimension, microscopic fine information embedding dimension (different printing color plates, matched with different printing precision of 200-350 lines, different printing reticulate pattern dot shapes (including frequency modulation or local net hanging) and auxiliary new ink material assistance), fast tracing addressing channel rules matched with a complex supply chain, implementing systematic printing hidden embedding of sensitive supplier information of a whole production chain, and normalizing printing tone compensation processing and gray balance copying adjustment, so that the complex halftone printing embedded information can be normally realized.

The scheme of the invention has high fidelity reproduction, anti-counterfeiting and traceability of wide color gamut, truly upgraded functional printing technology and products, and realizes high fidelity printing and traceability printing of the whole industry chain through anti-counterfeiting printing of embedded information.

And fourthly, the printing and reading of the data chain of the traceable information are more significant if the data chain is combined with a network, a mobile terminal interface or cloud computing and code scanning and reading are realized. The anti-counterfeiting security is ensured, the traceability management is realized through the whole industrial chain, and the capability of combining with supply information data chain, networking, mobile terminal and cloud computing is realized.

The equivalent embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts between the equivalent embodiments can be referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.

Claims

1. A traceable printing method of a printed product is characterized by comprising the following steps:

and based on an anti-counterfeiting printing technology, outputting and printing the traceable printed matter printing plate file and the standard compliance printing plate to obtain the traceable printed matter of the whole industrial chain.

2. The traceable printing method of a printed product according to claim 1, wherein the acquiring industry-wide chain tracing information of enterprise information related to industry-wide chain of manufacture of a commodity further includes:

3. The method for traceable printing of a printed product according to claim 1, wherein the invisible embedding means comprises one or more combinations of latent image embedding, micro code character screening embedding, local screening embedding, micro code character embedding and vector relief character embedding, and special effect invisible ink platemaking embedding.

4. The traceable printing method of a printed matter according to claim 1, wherein the establishing of the color separation model according to the original color gamut of the printed matter and the color requirement for print matching specifically comprises:

measuring the color gamut of the RGB manuscript of the printed matter in a PS software environment, and judging whether all colors in the manuscript of the printed matter are in the color gamut space of CKYK;

if the judgment result shows that the printing product is the CMYK4 color separation printing plate, converting the original manuscript of the printing product into a PDF standard format under the environment of PS software or AI graphic design making and editing software, and then directly separating the colors of the original manuscript of the printing product by using a 4-color separation model built in a CTP publishing process to obtain the CMYK4 color separation printing plate of the original manuscript of the printing product; or performing color separation based on RGB primary color ink on the original manuscript of the printed matter by using third-party color separation software to obtain an RGB three-primary color ink color separation model of the original manuscript of the printed matter; the third party color separation software is ICISS color separation software or one of GMG color separation software and PACKZ + ALwan market special multi-color separation color management software;

circularly drawing ' CMYK + extended basic color ' ink color gamut spaces containing primary and secondary colors based on Lab or Lch color spaces ' respectively and comparing the ink color gamut spaces with the original color gamut; if the ink color gamut is larger than or equal to the original color gamut or within the tolerance range accepted by the client, determining the ink color gamut matching of the XMYK + expanded basic color; the spectrum of all the to-be-used base color inks can be measured, a color separation model based on the color gamut of the inks is constructed by adopting third-party multi-color separation software, the color separation of the original manuscript of the printed matter is completed, and specific ink color gamut characteristics and a data model of the wide-color-gamut printing color separation of the original manuscript of the printed matter are obtained.

5. The traceable printing method of a printed matter according to claim 1 or 4, wherein the color separation model is created according to an original color gamut of the printed matter and a color requirement for print matching, and thereafter further comprising:

identifying and verifying the construction correctness of the color separation model, adopting a full-color domain standard map and a neutral gray map in an RGB format, carrying out color separation on the color separation model to be detected correspondingly, obtaining a result of the color separation model verification through screen proofing, paper proofing or object proofing conveniently under the support of GMG and CGS color management software, measuring by an Aizili instrument, and observing in a visual standard manner in combination with a standard light source environment, wherein the color separation model can be regarded as being correct and capable of being constructed when combined with chromatic aberration in an allowable range;

and when the color separation model verification result shows that the color separation model does not pass, the color separation model needs to be modified and optimized again until the color separation of the standard color test original atlas and the neutral gray atlas is carried out, and then the actual screen sample making, the paper sample making, or the physical sample making chromatic aberration Lab and Lch are in an allowable range.

6. The traceable printing method of a printed matter according to claim 1, wherein the traceable printed matter composite printing plate is obtained by embedding the whole industry chain traceable information into the electronic graphic printing plate of the printed matter manuscript in different invisible diving modes by adopting a circular proofing verification mode, and specifically comprises the following steps:

if the first judgment result is yes, invisible embedding of the tracing information of the whole industry chain is carried out on the image dots of the manuscript of the printed matter in a color separation screening, local screening, dot editing or micro code character screening mode, and identification and verification are carried out on the embedded information in an identification and verification mode;

if the second judgment result shows that the first judgment result is positive, performing multi-color separation mesh overprinting color visual simulation on the vector pattern of the original of the printed matter, and making an information latent image on the mesh tone; or directly embedding the micro code characters into the solid colors of the vector pattern region, and identifying and verifying the embedded information by adopting an identification and verification mode;

7. The traceable printing method according to claim 6, wherein the identification and verification manner includes embedding the information to be printed invisible and undisplayed, and reading the printed sample sheet conveniently and reliably, and facilitating conventional printing, and specifically includes:

information embedding invisibility inspection: the information-embedded plate-making manuscript is output according to the preset design requirement by hanging a net, and the real object is sampled and then judgedWhether the embedded information is displayed after being printed or not includes displaying after photographing and scanning of the printed sample; if the instrument measures the appearance measurement chromatic aberration delta E in the embedded information area₀₀If Lab exceeds the allowable range, readjusting the position or mode of invisible embedding of the optimization information; and sequentially and repeatedly optimizing until the invisible embedding passes the acceptance check until the invisible embedding is not shown or the color tolerance of the visible embedding is within the visual tolerance range under the environment of instrument data measurement and standard light sources.

Information embedding readability verification: after the information-embedded original manuscript is normally screened and output according to the design requirement and printed with a sample sheet, checking and accepting the original manuscript on a preset position of the sample sheet, and correspondingly judging whether a reading tool can conveniently, quickly and reliably read by means of an invisible embedding method; if the reading is inconvenient, or not reliable enough, and cannot be safely and quickly ensured to read by 100 percent, the diving position and the mode need to be optimized and adjusted again; optimizing and verifying in a circulating mode in sequence until all embedded information meets printing invisibility, and realizing convenient, accurate and reliable 100% quick reading by means of a tool;

in addition, for the information hiding and reading realized by adopting special electromagnetic information ink, fluorescent invisible ink, temperature change protection ink and special spectrum 'color fingerprint' printing and other special effect prepress information invisible plate making, special reading tools corresponding to the embedding modes are prepared in advance, such as: and the electromagnetic induction information recognizer, the spectrum recognizer or the magnifier, the lock opening plate and the fluorescent lamp are used for recognizing and reading to obtain the verification of the effectiveness of the invisible information recognition and reading.

8. A traceable printing system of a printed product, comprising:

the invisible embedding module is used for embedding the traceability information of the whole industry chain into an electronic image-text printing plate of the original manuscript of the printed matter in different invisible submerging modes by adopting a circular proofing verification mode according to the characteristics of the original manuscript of the printed matter, the addressing mode and the color separation model so as to obtain a traceable printed matter synthetic printing plate file;

and the printing module is used for outputting and printing the traceable printed matter printing plate file and the standard compliance printing plate, so that the traceable printed matter of the whole industrial chain can be obtained.

9. The traceable printing system of a printed product according to claim 8, further comprising:

10. The system for traceable printing of a printed product of claim 8, wherein the invisible embedding means comprises one or more combinations of latent image embedding, micro-code character screening embedding, partial screening embedding, micro-code character embedding and vector relief character embedding, special effect invisible ink platemaking embedding.